LinuxQuestions.org - auto mounting is not working properly

hi friends,

i am using ubuntu 8.04 and i am facing a problem of mounting external pen drive, exernal harddisk or even other /dev/ partitions in my login .. auto mount is not working
so i manually mount the partition by mount command .. but i dont know how i can resolve this problem ...

fdisk -l currently returns as
Disk /dev/sda: 160.0 GB, 160000000000 bytes
255 heads, 63 sectors/track, 19452 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0xa42d04a3

Device Boot Start End Blocks Id System
/dev/sda1 1 6 48163+ de Dell Utility
/dev/sda2 * 7 964 7695135 7 HPFS/NTFS
/dev/sda3 7044 19452 99675292+ 5 Extended
/dev/sda4 965 7043 48829567+ 83 Linux
/dev/sda5 18700 19452 6048441 82 Linux swap / Solaris
/dev/sda6 7044 13122 48829504+ 83 Linux
/dev/sda7 13123 18699 44797221 83 Linux

Partition table entries are not in disk order

Disk /dev/dm-0: 49 MB, 49319424 bytes
255 heads, 63 sectors/track, 5 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x8a42b4c3

This doesn't look like a partition table
Probably you selected the wrong device.

Device Boot Start End Blocks Id System
/dev/dm-0p1 1880 111816 883058677+ cd Unknown
Partition 1 has different physical/logical beginnings (non-Linux?):
phys=(0, 190, 62) logical=(1879, 146, 63)
Partition 1 has different physical/logical endings:
phys=(257, 19, 50) logical=(111815, 75, 50)
Partition 1 does not end on cylinder boundary.
/dev/dm-0p2 ? 33873 138704 842053558 72 Unknown
Partition 2 has different physical/logical beginnings (non-Linux?):
phys=(101, 107, 32) logical=(33872, 185, 42)
Partition 2 has different physical/logical endings:
phys=(370, 114, 47) logical=(138703, 139, 40)
Partition 2 does not end on cylinder boundary.
/dev/dm-0p3 ? 69058 69060 10020+ 45 Unknown
Partition 3 has different physical/logical beginnings (non-Linux?):
phys=(68, 114, 0) logical=(69057, 206, 23)
Partition 3 has different physical/logical endings:
phys=(322, 76, 12) logical=(69059, 14, 29)
Partition 3 does not end on cylinder boundary.

Disk /dev/dm-1: 7879 MB, 7879818240 bytes
255 heads, 63 sectors/track, 958 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x69205244

This doesn't look like a partition table
Probably you selected the wrong device.

Device Boot Start End Blocks Id System
/dev/dm-1p1 ? 13578 119522 850995205 72 Unknown
Partition 1 has different physical/logical beginnings (non-Linux?):
phys=(368, 111, 45) logical=(13577, 238, 11)
Partition 1 has different physical/logical endings:
phys=(371, 101, 51) logical=(119521, 238, 60)
Partition 1 does not end on cylinder boundary.
/dev/dm-1p2 ? 45382 79243 271987362 74 Unknown
Partition 2 has different physical/logical beginnings (non-Linux?):
phys=(67, 115, 32) logical=(45381, 70, 3)
Partition 2 has different physical/logical endings:
phys=(299, 114, 44) logical=(79242, 34, 29)
Partition 2 does not end on cylinder boundary.
/dev/dm-1p3 ? 10499 10499 0 65 Novell Netware 386
Partition 3 has different physical/logical beginnings (non-Linux?):
phys=(114, 111, 32) logical=(10498, 56, 41)
Partition 3 has different physical/logical endings:
phys=(353, 115, 52) logical=(10498, 56, 40)
Partition 3 does not end on cylinder boundary.
/dev/dm-1p4 167628 167631 25817+ 0 Empty
Partition 4 has different physical/logical beginnings (non-Linux?):
phys=(0, 0, 0) logical=(167627, 190, 52)
Partition 4 has different physical/logical endings:
phys=(0, 0, 0) logical=(167630, 245, 26)
Partition 4 does not end on cylinder boundary.

Partition table entries are not in disk order

Disk /dev/dm-2: 50.0 GB, 50001412608 bytes
255 heads, 63 sectors/track, 6078 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00000000

Disk /dev/dm-2 doesn't contain a valid partition table

Disk /dev/dm-3: 45.8 GB, 45872354304 bytes
255 heads, 63 sectors/track, 5576 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00000000

Disk /dev/dm-3 doesn't contain a valid partition table

can u identify my 4gb ipod i connected to usb port in it ..?
please help me ... to solve this problem ..